PV integrated UPQC for sensitive Load

Unified Power Quality Conditioner system used on the distribution side of power system can be improvised by integrating with renewable energy resources like the photovoltaic system. Photo Voltaic (PV) integrated UPQC compensates for real (P) and reactive power (Q). PV-UPQC system consists of back to back series and shunt compensators interlinked by a common DC link capacitor powered by the photovoltaic system. The reactive power compensation is achieved by shunt compensator of PV-UPQC system. The voltage fluctuations like voltage sag/swell are compensated by the series compensator. The nonlinear sensitive loads like induction motor loads can introduce harmonics and distort the stability of the power system. The harmonics introduced by the induction motor load can be mitigated by PV-UPQC system. This paper involves the modelling of the PV-UPQC system in MATLAB. The synchronous reference frame control algorithm is used for the control of sensitive load. The PV system is coupled with an MPPT control algorithm and the boost converter is designed to provide power to the DC-Link. The induction motor load characteristics are analysed under various voltage fluctuating conditions.